builder.setUnsafeReplacement("X");
    builder.addEscape(' ', "_");
    Escaper first = builder.build();
    // Modify one of the existing mappings before creating a new escaper.
    builder.addEscape(' ', "-");
    builder.addEscape('!', "$");
    Escaper second = builder.build();
    // This should have no effect on existing escapers.
    builder.addEscape(' ', "*");

    // Test both escapers after modifying the builder.

            }
        }
    }

    private void addScopes(Collection<String> scopes) {
        if (scopes != null) {
            for (String scope : scopes) {
                addScope(scope);
            }
        }
    }

    private void addScope(String scope) {
        this.scopes.add(scope);

        addScopeInternal(scope);
    }

    public Set<String> getScopes() {
        return scopes;
    }